BMW R 1250 RS 2021 vs. BMW S 1000 RR 2015

The BMW R 1250 RS 2021 and the BMW S 1000 RR 2015 are both impressive motorcycles, but they have some key differences.

In terms of the engine and drivetrain, the R 1250 RS features a Boxer engine with a bore of 102.5 mm and a stroke of 76 mm, delivering a power output of 136 HP and a torque of 143 Nm. On the other hand, the S 1000 RR has an inline engine with a bore of 80 mm and a stroke of 49.7 mm, producing a higher power output of 199 HP and a torque of 113 Nm. The R 1250 RS has a higher compression ratio of 12.5 compared to the S 1000 RR's 13. Both bikes have a 4-stroke engine and a displacement of 1254 cc and 999 cc, respectively. The R 1250 RS has a shaft drive transmission, while the S 1000 RR uses a chain drive.

In terms of suspension, the R 1250 RS has a telescopic fork front suspension and a single swingarm rear suspension, while the S 1000 RR also has a telescopic fork front suspension but with a swingarm rear suspension. Both bikes have a steel frame, but the R 1250 RS has a load-bearing engine type frame, while the S 1000 RR has an aluminum twin-tube frame.

BMW R 1250 RS 2021

Both bikes have dual disc front brakes, but the R 1250 RS uses radial technology, while the S 1000 RR does not specify the technology used. In terms of tire dimensions, both bikes have a front tire width of 120 mm and a diameter of 17 inches. However, the R 1250 RS has a rear tire width of 180 mm and a diameter of 17 inches, while the S 1000 RR has a wider rear tire width of 190 mm.

In terms of dimensions and weights, the R 1250 RS has a longer wheelbase of 1530 mm compared to the S 1000 RR's 1425 mm. The R 1250 RS also has a higher seat height of 820 mm compared to the S 1000 RR's 815 mm. The R 1250 RS is heavier with a curb weight of 243 kg (with ABS) compared to the S 1000 RR's 204 kg (with ABS). Both bikes have a similar fuel tank capacity, with the R 1250 RS having 18 liters and the S 1000 RR having 17.5 liters.

BMW S 1000 RR 2015

In terms of strengths, the R 1250 RS offers high stability in long curves, an agile and high-revving boxer engine, attractive appearance, comfortable seating position, extensive accessory list, and an excellent ESA chassis. On the other hand, the S 1000 RR boasts an excellent gear shift assistant, an incredibly powerful and high-revving engine, a wide range of accessories, and racing-ready data logging and calibration tool.

However, the R 1250 RS has some weaknesses, including its noticeable weight in tight curves, the windshield could be taller, many mandatory features come with additional costs, and it can be a bit slow. The S 1000 RR's weakness lies in its chassis quickly reaching its limit in the hands of professionals.

Overall, both bikes have their own strengths and weaknesses, and the choice between them will depend on the rider's preferences and priorities.